I hope it works out for u man. Mine killed 2 frontosas and almost killed my payara and redtail cuda so just keep an eye on it. Hopefully youll see signs first rather than just a dead fish one day like i did.
It's all just a matter of time for every jar, I know a past member had a jar with tankmates up until inch 22-23. Then the inevitable happened. Mine 'greeted' my new tankmate just as yours did and killed it the next day.
Regardless, Good luck! Hope all goes well! And like they all say, 'never know until you try'
agree with above. the jar is still small so it might go well for a while. then the jar gets bigger and he will kill the clown. might take months, but it will happen anyway.